2 * QEMU IDE disk and CD/DVD-ROM Emulator
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2006 Openedhand Ltd.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include "qemu/osdep.h"
27 #include "hw/isa/isa.h"
28 #include "migration/vmstate.h"
29 #include "qemu/error-report.h"
30 #include "qemu/main-loop.h"
31 #include "qemu/timer.h"
32 #include "qemu/hw-version.h"
33 #include "qemu/memalign.h"
34 #include "sysemu/sysemu.h"
35 #include "sysemu/blockdev.h"
36 #include "sysemu/dma.h"
37 #include "hw/block/block.h"
38 #include "sysemu/block-backend.h"
39 #include "qapi/error.h"
40 #include "qemu/cutils.h"
41 #include "sysemu/replay.h"
42 #include "sysemu/runstate.h"
43 #include "hw/ide/internal.h"
46 /* These values were based on a Seagate ST3500418AS but have been modified
47 to make more sense in QEMU */
48 static const int smart_attributes[][12] = {
49 /* id, flags, hflags, val, wrst, raw (6 bytes), threshold */
50 /* raw read error rate*/
51 { 0x01, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06},
53 { 0x03, 0x03, 0x00, 0x64, 0x64, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
54 /* start stop count */
55 { 0x04, 0x02, 0x00, 0x64, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14},
56 /* remapped sectors */
57 { 0x05, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24},
59 { 0x09, 0x03, 0x00, 0x64, 0x64, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
60 /* power cycle count */
61 { 0x0c, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
62 /* airflow-temperature-celsius */
63 { 190, 0x03, 0x00, 0x45, 0x45, 0x1f, 0x00, 0x1f, 0x1f, 0x00, 0x00, 0x32},
66 const char *IDE_DMA_CMD_lookup[IDE_DMA__COUNT] = {
67 [IDE_DMA_READ] = "DMA READ",
68 [IDE_DMA_WRITE] = "DMA WRITE",
69 [IDE_DMA_TRIM] = "DMA TRIM",
70 [IDE_DMA_ATAPI] = "DMA ATAPI"
73 static const char *IDE_DMA_CMD_str(enum ide_dma_cmd enval)
75 if ((unsigned)enval < IDE_DMA__COUNT) {
76 return IDE_DMA_CMD_lookup[enval];
78 return "DMA UNKNOWN CMD";
81 static void ide_dummy_transfer_stop(IDEState *s);
83 static void padstr(char *str, const char *src, int len)
86 for(i = 0; i < len; i++) {
95 static void put_le16(uint16_t *p, unsigned int v)
100 static void ide_identify_size(IDEState *s)
102 uint16_t *p = (uint16_t *)s->identify_data;
103 int64_t nb_sectors_lba28 = s->nb_sectors;
104 if (nb_sectors_lba28 >= 1 << 28) {
105 nb_sectors_lba28 = (1 << 28) - 1;
107 put_le16(p + 60, nb_sectors_lba28);
108 put_le16(p + 61, nb_sectors_lba28 >> 16);
109 put_le16(p + 100, s->nb_sectors);
110 put_le16(p + 101, s->nb_sectors >> 16);
111 put_le16(p + 102, s->nb_sectors >> 32);
112 put_le16(p + 103, s->nb_sectors >> 48);
115 static void ide_identify(IDEState *s)
118 unsigned int oldsize;
119 IDEDevice *dev = s->unit ? s->bus->slave : s->bus->master;
121 p = (uint16_t *)s->identify_data;
122 if (s->identify_set) {
125 memset(p, 0, sizeof(s->identify_data));
127 put_le16(p + 0, 0x0040);
128 put_le16(p + 1, s->cylinders);
129 put_le16(p + 3, s->heads);
130 put_le16(p + 4, 512 * s->sectors); /* XXX: retired, remove ? */
131 put_le16(p + 5, 512); /* XXX: retired, remove ? */
132 put_le16(p + 6, s->sectors);
133 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
134 put_le16(p + 20, 3); /* XXX: retired, remove ? */
135 put_le16(p + 21, 512); /* cache size in sectors */
136 put_le16(p + 22, 4); /* ecc bytes */
137 padstr((char *)(p + 23), s->version, 8); /* firmware version */
138 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
139 #if MAX_MULT_SECTORS > 1
140 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
142 put_le16(p + 48, 1); /* dword I/O */
143 put_le16(p + 49, (1 << 11) | (1 << 9) | (1 << 8)); /* DMA and LBA supported */
144 put_le16(p + 51, 0x200); /* PIO transfer cycle */
145 put_le16(p + 52, 0x200); /* DMA transfer cycle */
146 put_le16(p + 53, 1 | (1 << 1) | (1 << 2)); /* words 54-58,64-70,88 are valid */
147 put_le16(p + 54, s->cylinders);
148 put_le16(p + 55, s->heads);
149 put_le16(p + 56, s->sectors);
150 oldsize = s->cylinders * s->heads * s->sectors;
151 put_le16(p + 57, oldsize);
152 put_le16(p + 58, oldsize >> 16);
154 put_le16(p + 59, 0x100 | s->mult_sectors);
155 /* *(p + 60) := nb_sectors -- see ide_identify_size */
156 /* *(p + 61) := nb_sectors >> 16 -- see ide_identify_size */
157 put_le16(p + 62, 0x07); /* single word dma0-2 supported */
158 put_le16(p + 63, 0x07); /* mdma0-2 supported */
159 put_le16(p + 64, 0x03); /* pio3-4 supported */
160 put_le16(p + 65, 120);
161 put_le16(p + 66, 120);
162 put_le16(p + 67, 120);
163 put_le16(p + 68, 120);
164 if (dev && dev->conf.discard_granularity) {
165 put_le16(p + 69, (1 << 14)); /* determinate TRIM behavior */
169 put_le16(p + 75, s->ncq_queues - 1);
171 put_le16(p + 76, (1 << 8));
174 put_le16(p + 80, 0xf0); /* ata3 -> ata6 supported */
175 put_le16(p + 81, 0x16); /* conforms to ata5 */
176 /* 14=NOP supported, 5=WCACHE supported, 0=SMART supported */
177 put_le16(p + 82, (1 << 14) | (1 << 5) | 1);
178 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
179 put_le16(p + 83, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10));
180 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
182 put_le16(p + 84, (1 << 14) | (1 << 8) | 0);
184 put_le16(p + 84, (1 << 14) | 0);
186 /* 14 = NOP supported, 5=WCACHE enabled, 0=SMART feature set enabled */
187 if (blk_enable_write_cache(s->blk)) {
188 put_le16(p + 85, (1 << 14) | (1 << 5) | 1);
190 put_le16(p + 85, (1 << 14) | 1);
192 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
193 put_le16(p + 86, (1 << 13) | (1 <<12) | (1 << 10));
194 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
196 put_le16(p + 87, (1 << 14) | (1 << 8) | 0);
198 put_le16(p + 87, (1 << 14) | 0);
200 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
201 put_le16(p + 93, 1 | (1 << 14) | 0x2000);
202 /* *(p + 100) := nb_sectors -- see ide_identify_size */
203 /* *(p + 101) := nb_sectors >> 16 -- see ide_identify_size */
204 /* *(p + 102) := nb_sectors >> 32 -- see ide_identify_size */
205 /* *(p + 103) := nb_sectors >> 48 -- see ide_identify_size */
207 if (dev && dev->conf.physical_block_size)
208 put_le16(p + 106, 0x6000 | get_physical_block_exp(&dev->conf));
210 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
211 put_le16(p + 108, s->wwn >> 48);
212 put_le16(p + 109, s->wwn >> 32);
213 put_le16(p + 110, s->wwn >> 16);
214 put_le16(p + 111, s->wwn);
216 if (dev && dev->conf.discard_granularity) {
217 put_le16(p + 169, 1); /* TRIM support */
220 put_le16(p + 217, dev->rotation_rate); /* Nominal media rotation rate */
223 ide_identify_size(s);
227 memcpy(s->io_buffer, p, sizeof(s->identify_data));
230 static void ide_atapi_identify(IDEState *s)
234 p = (uint16_t *)s->identify_data;
235 if (s->identify_set) {
238 memset(p, 0, sizeof(s->identify_data));
240 /* Removable CDROM, 50us response, 12 byte packets */
241 put_le16(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0));
242 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
243 put_le16(p + 20, 3); /* buffer type */
244 put_le16(p + 21, 512); /* cache size in sectors */
245 put_le16(p + 22, 4); /* ecc bytes */
246 padstr((char *)(p + 23), s->version, 8); /* firmware version */
247 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
248 put_le16(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */
250 put_le16(p + 49, 1 << 9 | 1 << 8); /* DMA and LBA supported */
251 put_le16(p + 53, 7); /* words 64-70, 54-58, 88 valid */
252 put_le16(p + 62, 7); /* single word dma0-2 supported */
253 put_le16(p + 63, 7); /* mdma0-2 supported */
255 put_le16(p + 49, 1 << 9); /* LBA supported, no DMA */
256 put_le16(p + 53, 3); /* words 64-70, 54-58 valid */
257 put_le16(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
259 put_le16(p + 64, 3); /* pio3-4 supported */
260 put_le16(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
261 put_le16(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
262 put_le16(p + 67, 0x12c); /* minimum PIO cycle time without flow control */
263 put_le16(p + 68, 0xb4); /* minimum PIO cycle time with IORDY flow control */
265 put_le16(p + 71, 30); /* in ns */
266 put_le16(p + 72, 30); /* in ns */
269 put_le16(p + 75, s->ncq_queues - 1);
271 put_le16(p + 76, (1 << 8));
274 put_le16(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
276 put_le16(p + 84, (1 << 8)); /* supports WWN for words 108-111 */
277 put_le16(p + 87, (1 << 8)); /* WWN enabled */
281 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
285 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
286 put_le16(p + 108, s->wwn >> 48);
287 put_le16(p + 109, s->wwn >> 32);
288 put_le16(p + 110, s->wwn >> 16);
289 put_le16(p + 111, s->wwn);
295 memcpy(s->io_buffer, p, sizeof(s->identify_data));
298 static void ide_cfata_identify_size(IDEState *s)
300 uint16_t *p = (uint16_t *)s->identify_data;
301 put_le16(p + 7, s->nb_sectors >> 16); /* Sectors per card */
302 put_le16(p + 8, s->nb_sectors); /* Sectors per card */
303 put_le16(p + 60, s->nb_sectors); /* Total LBA sectors */
304 put_le16(p + 61, s->nb_sectors >> 16); /* Total LBA sectors */
307 static void ide_cfata_identify(IDEState *s)
312 p = (uint16_t *)s->identify_data;
313 if (s->identify_set) {
316 memset(p, 0, sizeof(s->identify_data));
318 cur_sec = s->cylinders * s->heads * s->sectors;
320 put_le16(p + 0, 0x848a); /* CF Storage Card signature */
321 put_le16(p + 1, s->cylinders); /* Default cylinders */
322 put_le16(p + 3, s->heads); /* Default heads */
323 put_le16(p + 6, s->sectors); /* Default sectors per track */
324 /* *(p + 7) := nb_sectors >> 16 -- see ide_cfata_identify_size */
325 /* *(p + 8) := nb_sectors -- see ide_cfata_identify_size */
326 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
327 put_le16(p + 22, 0x0004); /* ECC bytes */
328 padstr((char *) (p + 23), s->version, 8); /* Firmware Revision */
329 padstr((char *) (p + 27), s->drive_model_str, 40);/* Model number */
330 #if MAX_MULT_SECTORS > 1
331 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
333 put_le16(p + 47, 0x0000);
335 put_le16(p + 49, 0x0f00); /* Capabilities */
336 put_le16(p + 51, 0x0002); /* PIO cycle timing mode */
337 put_le16(p + 52, 0x0001); /* DMA cycle timing mode */
338 put_le16(p + 53, 0x0003); /* Translation params valid */
339 put_le16(p + 54, s->cylinders); /* Current cylinders */
340 put_le16(p + 55, s->heads); /* Current heads */
341 put_le16(p + 56, s->sectors); /* Current sectors */
342 put_le16(p + 57, cur_sec); /* Current capacity */
343 put_le16(p + 58, cur_sec >> 16); /* Current capacity */
344 if (s->mult_sectors) /* Multiple sector setting */
345 put_le16(p + 59, 0x100 | s->mult_sectors);
346 /* *(p + 60) := nb_sectors -- see ide_cfata_identify_size */
347 /* *(p + 61) := nb_sectors >> 16 -- see ide_cfata_identify_size */
348 put_le16(p + 63, 0x0203); /* Multiword DMA capability */
349 put_le16(p + 64, 0x0001); /* Flow Control PIO support */
350 put_le16(p + 65, 0x0096); /* Min. Multiword DMA cycle */
351 put_le16(p + 66, 0x0096); /* Rec. Multiword DMA cycle */
352 put_le16(p + 68, 0x00b4); /* Min. PIO cycle time */
353 put_le16(p + 82, 0x400c); /* Command Set supported */
354 put_le16(p + 83, 0x7068); /* Command Set supported */
355 put_le16(p + 84, 0x4000); /* Features supported */
356 put_le16(p + 85, 0x000c); /* Command Set enabled */
357 put_le16(p + 86, 0x7044); /* Command Set enabled */
358 put_le16(p + 87, 0x4000); /* Features enabled */
359 put_le16(p + 91, 0x4060); /* Current APM level */
360 put_le16(p + 129, 0x0002); /* Current features option */
361 put_le16(p + 130, 0x0005); /* Reassigned sectors */
362 put_le16(p + 131, 0x0001); /* Initial power mode */
363 put_le16(p + 132, 0x0000); /* User signature */
364 put_le16(p + 160, 0x8100); /* Power requirement */
365 put_le16(p + 161, 0x8001); /* CF command set */
367 ide_cfata_identify_size(s);
371 memcpy(s->io_buffer, p, sizeof(s->identify_data));
374 static void ide_set_signature(IDEState *s)
376 s->select &= ~(ATA_DEV_HS); /* clear head */
380 if (s->drive_kind == IDE_CD) {
392 static bool ide_sect_range_ok(IDEState *s,
393 uint64_t sector, uint64_t nb_sectors)
395 uint64_t total_sectors;
397 blk_get_geometry(s->blk, &total_sectors);
398 if (sector > total_sectors || nb_sectors > total_sectors - sector) {
404 typedef struct TrimAIOCB {
414 static void trim_aio_cancel(BlockAIOCB *acb)
416 TrimAIOCB *iocb = container_of(acb, TrimAIOCB, common);
418 /* Exit the loop so ide_issue_trim_cb will not continue */
419 iocb->j = iocb->qiov->niov - 1;
420 iocb->i = (iocb->qiov->iov[iocb->j].iov_len / 8) - 1;
422 iocb->ret = -ECANCELED;
425 blk_aio_cancel_async(iocb->aiocb);
430 static const AIOCBInfo trim_aiocb_info = {
431 .aiocb_size = sizeof(TrimAIOCB),
432 .cancel_async = trim_aio_cancel,
435 static void ide_trim_bh_cb(void *opaque)
437 TrimAIOCB *iocb = opaque;
438 BlockBackend *blk = iocb->s->blk;
440 iocb->common.cb(iocb->common.opaque, iocb->ret);
442 qemu_bh_delete(iocb->bh);
444 qemu_aio_unref(iocb);
446 /* Paired with an increment in ide_issue_trim() */
447 blk_dec_in_flight(blk);
450 static void ide_issue_trim_cb(void *opaque, int ret)
452 TrimAIOCB *iocb = opaque;
453 IDEState *s = iocb->s;
457 block_acct_done(blk_get_stats(s->blk), &s->acct);
459 block_acct_failed(blk_get_stats(s->blk), &s->acct);
464 while (iocb->j < iocb->qiov->niov) {
466 while (++iocb->i < iocb->qiov->iov[j].iov_len / 8) {
468 uint64_t *buffer = iocb->qiov->iov[j].iov_base;
470 /* 6-byte LBA + 2-byte range per entry */
471 uint64_t entry = le64_to_cpu(buffer[i]);
472 uint64_t sector = entry & 0x0000ffffffffffffULL;
473 uint16_t count = entry >> 48;
479 if (!ide_sect_range_ok(s, sector, count)) {
480 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_UNMAP);
485 block_acct_start(blk_get_stats(s->blk), &s->acct,
486 count << BDRV_SECTOR_BITS, BLOCK_ACCT_UNMAP);
488 /* Got an entry! Submit and exit. */
489 iocb->aiocb = blk_aio_pdiscard(s->blk,
490 sector << BDRV_SECTOR_BITS,
491 count << BDRV_SECTOR_BITS,
492 ide_issue_trim_cb, opaque);
506 replay_bh_schedule_event(iocb->bh);
510 BlockAIOCB *ide_issue_trim(
511 int64_t offset, QEMUIOVector *qiov,
512 BlockCompletionFunc *cb, void *cb_opaque, void *opaque)
514 IDEState *s = opaque;
517 /* Paired with a decrement in ide_trim_bh_cb() */
518 blk_inc_in_flight(s->blk);
520 iocb = blk_aio_get(&trim_aiocb_info, s->blk, cb, cb_opaque);
522 iocb->bh = qemu_bh_new(ide_trim_bh_cb, iocb);
527 ide_issue_trim_cb(iocb, 0);
528 return &iocb->common;
531 void ide_abort_command(IDEState *s)
533 ide_transfer_stop(s);
534 s->status = READY_STAT | ERR_STAT;
538 static void ide_set_retry(IDEState *s)
540 s->bus->retry_unit = s->unit;
541 s->bus->retry_sector_num = ide_get_sector(s);
542 s->bus->retry_nsector = s->nsector;
545 static void ide_clear_retry(IDEState *s)
547 s->bus->retry_unit = -1;
548 s->bus->retry_sector_num = 0;
549 s->bus->retry_nsector = 0;
552 /* prepare data transfer and tell what to do after */
553 bool ide_transfer_start_norecurse(IDEState *s, uint8_t *buf, int size,
554 EndTransferFunc *end_transfer_func)
557 s->data_end = buf + size;
559 if (!(s->status & ERR_STAT)) {
560 s->status |= DRQ_STAT;
562 if (!s->bus->dma->ops->pio_transfer) {
563 s->end_transfer_func = end_transfer_func;
566 s->bus->dma->ops->pio_transfer(s->bus->dma);
570 void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
571 EndTransferFunc *end_transfer_func)
573 if (ide_transfer_start_norecurse(s, buf, size, end_transfer_func)) {
574 end_transfer_func(s);
578 static void ide_cmd_done(IDEState *s)
580 if (s->bus->dma->ops->cmd_done) {
581 s->bus->dma->ops->cmd_done(s->bus->dma);
585 static void ide_transfer_halt(IDEState *s)
587 s->end_transfer_func = ide_transfer_stop;
588 s->data_ptr = s->io_buffer;
589 s->data_end = s->io_buffer;
590 s->status &= ~DRQ_STAT;
593 void ide_transfer_stop(IDEState *s)
595 ide_transfer_halt(s);
599 int64_t ide_get_sector(IDEState *s)
602 if (s->select & (ATA_DEV_LBA)) {
604 sector_num = ((int64_t)s->hob_hcyl << 40) |
605 ((int64_t) s->hob_lcyl << 32) |
606 ((int64_t) s->hob_sector << 24) |
607 ((int64_t) s->hcyl << 16) |
608 ((int64_t) s->lcyl << 8) | s->sector;
611 sector_num = ((s->select & (ATA_DEV_LBA_MSB)) << 24) |
612 (s->hcyl << 16) | (s->lcyl << 8) | s->sector;
616 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
617 (s->select & (ATA_DEV_HS)) * s->sectors + (s->sector - 1);
623 void ide_set_sector(IDEState *s, int64_t sector_num)
626 if (s->select & (ATA_DEV_LBA)) {
628 s->sector = sector_num;
629 s->lcyl = sector_num >> 8;
630 s->hcyl = sector_num >> 16;
631 s->hob_sector = sector_num >> 24;
632 s->hob_lcyl = sector_num >> 32;
633 s->hob_hcyl = sector_num >> 40;
636 s->select = (s->select & ~(ATA_DEV_LBA_MSB)) |
637 ((sector_num >> 24) & (ATA_DEV_LBA_MSB));
638 s->hcyl = (sector_num >> 16);
639 s->lcyl = (sector_num >> 8);
640 s->sector = (sector_num);
644 cyl = sector_num / (s->heads * s->sectors);
645 r = sector_num % (s->heads * s->sectors);
648 s->select = (s->select & ~(ATA_DEV_HS)) |
649 ((r / s->sectors) & (ATA_DEV_HS));
650 s->sector = (r % s->sectors) + 1;
654 static void ide_rw_error(IDEState *s) {
655 ide_abort_command(s);
659 static void ide_buffered_readv_cb(void *opaque, int ret)
661 IDEBufferedRequest *req = opaque;
662 if (!req->orphaned) {
664 assert(req->qiov.size == req->original_qiov->size);
665 qemu_iovec_from_buf(req->original_qiov, 0,
666 req->qiov.local_iov.iov_base,
667 req->original_qiov->size);
669 req->original_cb(req->original_opaque, ret);
671 QLIST_REMOVE(req, list);
672 qemu_vfree(qemu_iovec_buf(&req->qiov));
676 #define MAX_BUFFERED_REQS 16
678 BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num,
679 QEMUIOVector *iov, int nb_sectors,
680 BlockCompletionFunc *cb, void *opaque)
683 IDEBufferedRequest *req;
686 QLIST_FOREACH(req, &s->buffered_requests, list) {
689 if (c > MAX_BUFFERED_REQS) {
690 return blk_abort_aio_request(s->blk, cb, opaque, -EIO);
693 req = g_new0(IDEBufferedRequest, 1);
694 req->original_qiov = iov;
695 req->original_cb = cb;
696 req->original_opaque = opaque;
697 qemu_iovec_init_buf(&req->qiov, blk_blockalign(s->blk, iov->size),
700 aioreq = blk_aio_preadv(s->blk, sector_num << BDRV_SECTOR_BITS,
701 &req->qiov, 0, ide_buffered_readv_cb, req);
703 QLIST_INSERT_HEAD(&s->buffered_requests, req, list);
708 * Cancel all pending DMA requests.
709 * Any buffered DMA requests are instantly canceled,
710 * but any pending unbuffered DMA requests must be waited on.
712 void ide_cancel_dma_sync(IDEState *s)
714 IDEBufferedRequest *req;
716 /* First invoke the callbacks of all buffered requests
717 * and flag those requests as orphaned. Ideally there
718 * are no unbuffered (Scatter Gather DMA Requests or
719 * write requests) pending and we can avoid to drain. */
720 QLIST_FOREACH(req, &s->buffered_requests, list) {
721 if (!req->orphaned) {
722 trace_ide_cancel_dma_sync_buffered(req->original_cb, req);
723 req->original_cb(req->original_opaque, -ECANCELED);
725 req->orphaned = true;
729 * We can't cancel Scatter Gather DMA in the middle of the
730 * operation or a partial (not full) DMA transfer would reach
731 * the storage so we wait for completion instead (we behave
732 * like if the DMA was completed by the time the guest trying
733 * to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
736 * In the future we'll be able to safely cancel the I/O if the
737 * whole DMA operation will be submitted to disk with a single
738 * aio operation with preadv/pwritev.
740 if (s->bus->dma->aiocb) {
741 trace_ide_cancel_dma_sync_remaining();
743 assert(s->bus->dma->aiocb == NULL);
747 static void ide_sector_read(IDEState *s);
749 static void ide_sector_read_cb(void *opaque, int ret)
751 IDEState *s = opaque;
755 s->status &= ~BUSY_STAT;
758 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO |
764 block_acct_done(blk_get_stats(s->blk), &s->acct);
767 if (n > s->req_nb_sectors) {
768 n = s->req_nb_sectors;
771 ide_set_sector(s, ide_get_sector(s) + n);
773 /* Allow the guest to read the io_buffer */
774 ide_transfer_start(s, s->io_buffer, n * BDRV_SECTOR_SIZE, ide_sector_read);
778 static void ide_sector_read(IDEState *s)
783 s->status = READY_STAT | SEEK_STAT;
784 s->error = 0; /* not needed by IDE spec, but needed by Windows */
785 sector_num = ide_get_sector(s);
789 ide_transfer_stop(s);
793 s->status |= BUSY_STAT;
795 if (n > s->req_nb_sectors) {
796 n = s->req_nb_sectors;
799 trace_ide_sector_read(sector_num, n);
801 if (!ide_sect_range_ok(s, sector_num, n)) {
803 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
807 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
809 block_acct_start(blk_get_stats(s->blk), &s->acct,
810 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
811 s->pio_aiocb = ide_buffered_readv(s, sector_num, &s->qiov, n,
812 ide_sector_read_cb, s);
815 void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
817 if (s->bus->dma->ops->commit_buf) {
818 s->bus->dma->ops->commit_buf(s->bus->dma, tx_bytes);
820 s->io_buffer_offset += tx_bytes;
821 qemu_sglist_destroy(&s->sg);
824 void ide_set_inactive(IDEState *s, bool more)
826 s->bus->dma->aiocb = NULL;
828 if (s->bus->dma->ops->set_inactive) {
829 s->bus->dma->ops->set_inactive(s->bus->dma, more);
834 void ide_dma_error(IDEState *s)
836 dma_buf_commit(s, 0);
837 ide_abort_command(s);
838 ide_set_inactive(s, false);
842 int ide_handle_rw_error(IDEState *s, int error, int op)
844 bool is_read = (op & IDE_RETRY_READ) != 0;
845 BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
847 if (action == BLOCK_ERROR_ACTION_STOP) {
848 assert(s->bus->retry_unit == s->unit);
849 s->bus->error_status = op;
850 } else if (action == BLOCK_ERROR_ACTION_REPORT) {
851 block_acct_failed(blk_get_stats(s->blk), &s->acct);
852 if (IS_IDE_RETRY_DMA(op)) {
854 } else if (IS_IDE_RETRY_ATAPI(op)) {
855 ide_atapi_io_error(s, -error);
860 blk_error_action(s->blk, action, is_read, error);
861 return action != BLOCK_ERROR_ACTION_IGNORE;
864 static void ide_dma_cb(void *opaque, int ret)
866 IDEState *s = opaque;
870 bool stay_active = false;
871 int32_t prep_size = 0;
873 if (ret == -EINVAL) {
879 if (ide_handle_rw_error(s, -ret, ide_dma_cmd_to_retry(s->dma_cmd))) {
880 s->bus->dma->aiocb = NULL;
881 dma_buf_commit(s, 0);
886 if (s->io_buffer_size > s->nsector * 512) {
888 * The PRDs were longer than needed for this request.
889 * The Active bit must remain set after the request completes.
894 n = s->io_buffer_size >> 9;
897 sector_num = ide_get_sector(s);
899 assert(n * 512 == s->sg.size);
900 dma_buf_commit(s, s->sg.size);
902 ide_set_sector(s, sector_num);
906 /* end of transfer ? */
907 if (s->nsector == 0) {
908 s->status = READY_STAT | SEEK_STAT;
913 /* launch next transfer */
915 s->io_buffer_index = 0;
916 s->io_buffer_size = n * 512;
917 prep_size = s->bus->dma->ops->prepare_buf(s->bus->dma, s->io_buffer_size);
918 /* prepare_buf() must succeed and respect the limit */
919 assert(prep_size >= 0 && prep_size <= n * 512);
922 * Now prep_size stores the number of bytes in the sglist, and
923 * s->io_buffer_size stores the number of bytes described by the PRDs.
926 if (prep_size < n * 512) {
928 * The PRDs are too short for this request. Error condition!
929 * Reset the Active bit and don't raise the interrupt.
931 s->status = READY_STAT | SEEK_STAT;
932 dma_buf_commit(s, 0);
936 trace_ide_dma_cb(s, sector_num, n, IDE_DMA_CMD_str(s->dma_cmd));
938 if ((s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) &&
939 !ide_sect_range_ok(s, sector_num, n)) {
941 block_acct_invalid(blk_get_stats(s->blk), s->acct.type);
945 offset = sector_num << BDRV_SECTOR_BITS;
946 switch (s->dma_cmd) {
948 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset,
949 BDRV_SECTOR_SIZE, ide_dma_cb, s);
952 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset,
953 BDRV_SECTOR_SIZE, ide_dma_cb, s);
956 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk),
957 &s->sg, offset, BDRV_SECTOR_SIZE,
958 ide_issue_trim, s, ide_dma_cb, s,
959 DMA_DIRECTION_TO_DEVICE);
967 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
968 block_acct_done(blk_get_stats(s->blk), &s->acct);
970 ide_set_inactive(s, stay_active);
973 static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
975 s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
976 s->io_buffer_size = 0;
977 s->dma_cmd = dma_cmd;
981 block_acct_start(blk_get_stats(s->blk), &s->acct,
982 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
985 block_acct_start(blk_get_stats(s->blk), &s->acct,
986 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
992 ide_start_dma(s, ide_dma_cb);
995 void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
997 s->io_buffer_index = 0;
999 if (s->bus->dma->ops->start_dma) {
1000 s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
1004 static void ide_sector_write(IDEState *s);
1006 static void ide_sector_write_timer_cb(void *opaque)
1008 IDEState *s = opaque;
1009 ide_set_irq(s->bus);
1012 static void ide_sector_write_cb(void *opaque, int ret)
1014 IDEState *s = opaque;
1017 s->pio_aiocb = NULL;
1018 s->status &= ~BUSY_STAT;
1021 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO)) {
1026 block_acct_done(blk_get_stats(s->blk), &s->acct);
1029 if (n > s->req_nb_sectors) {
1030 n = s->req_nb_sectors;
1034 ide_set_sector(s, ide_get_sector(s) + n);
1035 if (s->nsector == 0) {
1036 /* no more sectors to write */
1037 ide_transfer_stop(s);
1039 int n1 = s->nsector;
1040 if (n1 > s->req_nb_sectors) {
1041 n1 = s->req_nb_sectors;
1043 ide_transfer_start(s, s->io_buffer, n1 * BDRV_SECTOR_SIZE,
1047 if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
1048 /* It seems there is a bug in the Windows 2000 installer HDD
1049 IDE driver which fills the disk with empty logs when the
1050 IDE write IRQ comes too early. This hack tries to correct
1051 that at the expense of slower write performances. Use this
1052 option _only_ to install Windows 2000. You must disable it
1054 timer_mod(s->sector_write_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1055 (NANOSECONDS_PER_SECOND / 1000));
1057 ide_set_irq(s->bus);
1061 static void ide_sector_write(IDEState *s)
1066 s->status = READY_STAT | SEEK_STAT | BUSY_STAT;
1067 sector_num = ide_get_sector(s);
1070 if (n > s->req_nb_sectors) {
1071 n = s->req_nb_sectors;
1074 trace_ide_sector_write(sector_num, n);
1076 if (!ide_sect_range_ok(s, sector_num, n)) {
1078 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_WRITE);
1082 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
1084 block_acct_start(blk_get_stats(s->blk), &s->acct,
1085 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
1086 s->pio_aiocb = blk_aio_pwritev(s->blk, sector_num << BDRV_SECTOR_BITS,
1087 &s->qiov, 0, ide_sector_write_cb, s);
1090 static void ide_flush_cb(void *opaque, int ret)
1092 IDEState *s = opaque;
1094 s->pio_aiocb = NULL;
1097 /* XXX: What sector number to set here? */
1098 if (ide_handle_rw_error(s, -ret, IDE_RETRY_FLUSH)) {
1104 block_acct_done(blk_get_stats(s->blk), &s->acct);
1106 s->status = READY_STAT | SEEK_STAT;
1108 ide_set_irq(s->bus);
1111 static void ide_flush_cache(IDEState *s)
1113 if (s->blk == NULL) {
1118 s->status |= BUSY_STAT;
1120 block_acct_start(blk_get_stats(s->blk), &s->acct, 0, BLOCK_ACCT_FLUSH);
1121 s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
1124 static void ide_cfata_metadata_inquiry(IDEState *s)
1129 p = (uint16_t *) s->io_buffer;
1130 memset(p, 0, 0x200);
1131 spd = ((s->mdata_size - 1) >> 9) + 1;
1133 put_le16(p + 0, 0x0001); /* Data format revision */
1134 put_le16(p + 1, 0x0000); /* Media property: silicon */
1135 put_le16(p + 2, s->media_changed); /* Media status */
1136 put_le16(p + 3, s->mdata_size & 0xffff); /* Capacity in bytes (low) */
1137 put_le16(p + 4, s->mdata_size >> 16); /* Capacity in bytes (high) */
1138 put_le16(p + 5, spd & 0xffff); /* Sectors per device (low) */
1139 put_le16(p + 6, spd >> 16); /* Sectors per device (high) */
1142 static void ide_cfata_metadata_read(IDEState *s)
1146 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1147 s->status = ERR_STAT;
1148 s->error = ABRT_ERR;
1152 p = (uint16_t *) s->io_buffer;
1153 memset(p, 0, 0x200);
1155 put_le16(p + 0, s->media_changed); /* Media status */
1156 memcpy(p + 1, s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1157 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1158 s->nsector << 9), 0x200 - 2));
1161 static void ide_cfata_metadata_write(IDEState *s)
1163 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1164 s->status = ERR_STAT;
1165 s->error = ABRT_ERR;
1169 s->media_changed = 0;
1171 memcpy(s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1173 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1174 s->nsector << 9), 0x200 - 2));
1177 /* called when the inserted state of the media has changed */
1178 static void ide_cd_change_cb(void *opaque, bool load, Error **errp)
1180 IDEState *s = opaque;
1181 uint64_t nb_sectors;
1183 s->tray_open = !load;
1184 blk_get_geometry(s->blk, &nb_sectors);
1185 s->nb_sectors = nb_sectors;
1188 * First indicate to the guest that a CD has been removed. That's
1189 * done on the next command the guest sends us.
1191 * Then we set UNIT_ATTENTION, by which the guest will
1192 * detect a new CD in the drive. See ide_atapi_cmd() for details.
1194 s->cdrom_changed = 1;
1195 s->events.new_media = true;
1196 s->events.eject_request = false;
1197 ide_set_irq(s->bus);
1200 static void ide_cd_eject_request_cb(void *opaque, bool force)
1202 IDEState *s = opaque;
1204 s->events.eject_request = true;
1206 s->tray_locked = false;
1208 ide_set_irq(s->bus);
1211 static void ide_cmd_lba48_transform(IDEState *s, int lba48)
1215 /* handle the 'magic' 0 nsector count conversion here. to avoid
1216 * fiddling with the rest of the read logic, we just store the
1217 * full sector count in ->nsector and ignore ->hob_nsector from now
1223 if (!s->nsector && !s->hob_nsector)
1226 int lo = s->nsector;
1227 int hi = s->hob_nsector;
1229 s->nsector = (hi << 8) | lo;
1234 static void ide_clear_hob(IDEBus *bus)
1236 /* any write clears HOB high bit of device control register */
1237 bus->cmd &= ~(IDE_CTRL_HOB);
1240 /* IOport [W]rite [R]egisters */
1241 enum ATA_IOPORT_WR {
1242 ATA_IOPORT_WR_DATA = 0,
1243 ATA_IOPORT_WR_FEATURES = 1,
1244 ATA_IOPORT_WR_SECTOR_COUNT = 2,
1245 ATA_IOPORT_WR_SECTOR_NUMBER = 3,
1246 ATA_IOPORT_WR_CYLINDER_LOW = 4,
1247 ATA_IOPORT_WR_CYLINDER_HIGH = 5,
1248 ATA_IOPORT_WR_DEVICE_HEAD = 6,
1249 ATA_IOPORT_WR_COMMAND = 7,
1250 ATA_IOPORT_WR_NUM_REGISTERS,
1253 const char *ATA_IOPORT_WR_lookup[ATA_IOPORT_WR_NUM_REGISTERS] = {
1254 [ATA_IOPORT_WR_DATA] = "Data",
1255 [ATA_IOPORT_WR_FEATURES] = "Features",
1256 [ATA_IOPORT_WR_SECTOR_COUNT] = "Sector Count",
1257 [ATA_IOPORT_WR_SECTOR_NUMBER] = "Sector Number",
1258 [ATA_IOPORT_WR_CYLINDER_LOW] = "Cylinder Low",
1259 [ATA_IOPORT_WR_CYLINDER_HIGH] = "Cylinder High",
1260 [ATA_IOPORT_WR_DEVICE_HEAD] = "Device/Head",
1261 [ATA_IOPORT_WR_COMMAND] = "Command"
1264 void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
1266 IDEBus *bus = opaque;
1267 IDEState *s = idebus_active_if(bus);
1268 int reg_num = addr & 7;
1270 trace_ide_ioport_write(addr, ATA_IOPORT_WR_lookup[reg_num], val, bus, s);
1272 /* ignore writes to command block while busy with previous command */
1273 if (reg_num != 7 && (s->status & (BUSY_STAT|DRQ_STAT))) {
1277 /* NOTE: Device0 and Device1 both receive incoming register writes.
1278 * (They're on the same bus! They have to!) */
1283 case ATA_IOPORT_WR_FEATURES:
1285 bus->ifs[0].hob_feature = bus->ifs[0].feature;
1286 bus->ifs[1].hob_feature = bus->ifs[1].feature;
1287 bus->ifs[0].feature = val;
1288 bus->ifs[1].feature = val;
1290 case ATA_IOPORT_WR_SECTOR_COUNT:
1292 bus->ifs[0].hob_nsector = bus->ifs[0].nsector;
1293 bus->ifs[1].hob_nsector = bus->ifs[1].nsector;
1294 bus->ifs[0].nsector = val;
1295 bus->ifs[1].nsector = val;
1297 case ATA_IOPORT_WR_SECTOR_NUMBER:
1299 bus->ifs[0].hob_sector = bus->ifs[0].sector;
1300 bus->ifs[1].hob_sector = bus->ifs[1].sector;
1301 bus->ifs[0].sector = val;
1302 bus->ifs[1].sector = val;
1304 case ATA_IOPORT_WR_CYLINDER_LOW:
1306 bus->ifs[0].hob_lcyl = bus->ifs[0].lcyl;
1307 bus->ifs[1].hob_lcyl = bus->ifs[1].lcyl;
1308 bus->ifs[0].lcyl = val;
1309 bus->ifs[1].lcyl = val;
1311 case ATA_IOPORT_WR_CYLINDER_HIGH:
1313 bus->ifs[0].hob_hcyl = bus->ifs[0].hcyl;
1314 bus->ifs[1].hob_hcyl = bus->ifs[1].hcyl;
1315 bus->ifs[0].hcyl = val;
1316 bus->ifs[1].hcyl = val;
1318 case ATA_IOPORT_WR_DEVICE_HEAD:
1320 bus->ifs[0].select = val | (ATA_DEV_ALWAYS_ON);
1321 bus->ifs[1].select = val | (ATA_DEV_ALWAYS_ON);
1323 bus->unit = (val & (ATA_DEV_SELECT)) ? 1 : 0;
1326 case ATA_IOPORT_WR_COMMAND:
1328 qemu_irq_lower(bus->irq);
1329 ide_exec_cmd(bus, val);
1334 static void ide_reset(IDEState *s)
1339 blk_aio_cancel(s->pio_aiocb);
1340 s->pio_aiocb = NULL;
1343 if (s->reset_reverts) {
1344 s->reset_reverts = false;
1345 s->heads = s->drive_heads;
1346 s->sectors = s->drive_sectors;
1348 if (s->drive_kind == IDE_CFATA)
1349 s->mult_sectors = 0;
1351 s->mult_sectors = MAX_MULT_SECTORS;
1367 s->select = (ATA_DEV_ALWAYS_ON);
1368 s->status = READY_STAT | SEEK_STAT;
1372 /* ATAPI specific */
1375 s->cdrom_changed = 0;
1376 s->packet_transfer_size = 0;
1377 s->elementary_transfer_size = 0;
1378 s->io_buffer_index = 0;
1379 s->cd_sector_size = 0;
1384 s->io_buffer_size = 0;
1385 s->req_nb_sectors = 0;
1387 ide_set_signature(s);
1388 /* init the transfer handler so that 0xffff is returned on data
1390 s->end_transfer_func = ide_dummy_transfer_stop;
1391 ide_dummy_transfer_stop(s);
1392 s->media_changed = 0;
1395 static bool cmd_nop(IDEState *s, uint8_t cmd)
1400 static bool cmd_device_reset(IDEState *s, uint8_t cmd)
1402 /* Halt PIO (in the DRQ phase), then DMA */
1403 ide_transfer_halt(s);
1404 ide_cancel_dma_sync(s);
1406 /* Reset any PIO commands, reset signature, etc */
1409 /* RESET: ATA8-ACS3 7.10.4 "Normal Outputs";
1410 * ATA8-ACS3 Table 184 "Device Signatures for Normal Output" */
1413 /* Do not overwrite status register */
1417 static bool cmd_data_set_management(IDEState *s, uint8_t cmd)
1419 switch (s->feature) {
1422 ide_sector_start_dma(s, IDE_DMA_TRIM);
1428 ide_abort_command(s);
1432 static bool cmd_identify(IDEState *s, uint8_t cmd)
1434 if (s->blk && s->drive_kind != IDE_CD) {
1435 if (s->drive_kind != IDE_CFATA) {
1438 ide_cfata_identify(s);
1440 s->status = READY_STAT | SEEK_STAT;
1441 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1442 ide_set_irq(s->bus);
1445 if (s->drive_kind == IDE_CD) {
1446 ide_set_signature(s);
1448 ide_abort_command(s);
1454 static bool cmd_verify(IDEState *s, uint8_t cmd)
1456 bool lba48 = (cmd == WIN_VERIFY_EXT);
1458 /* do sector number check ? */
1459 ide_cmd_lba48_transform(s, lba48);
1464 static bool cmd_set_multiple_mode(IDEState *s, uint8_t cmd)
1466 if (s->drive_kind == IDE_CFATA && s->nsector == 0) {
1467 /* Disable Read and Write Multiple */
1468 s->mult_sectors = 0;
1469 } else if ((s->nsector & 0xff) != 0 &&
1470 ((s->nsector & 0xff) > MAX_MULT_SECTORS ||
1471 (s->nsector & (s->nsector - 1)) != 0)) {
1472 ide_abort_command(s);
1474 s->mult_sectors = s->nsector & 0xff;
1480 static bool cmd_read_multiple(IDEState *s, uint8_t cmd)
1482 bool lba48 = (cmd == WIN_MULTREAD_EXT);
1484 if (!s->blk || !s->mult_sectors) {
1485 ide_abort_command(s);
1489 ide_cmd_lba48_transform(s, lba48);
1490 s->req_nb_sectors = s->mult_sectors;
1495 static bool cmd_write_multiple(IDEState *s, uint8_t cmd)
1497 bool lba48 = (cmd == WIN_MULTWRITE_EXT);
1500 if (!s->blk || !s->mult_sectors) {
1501 ide_abort_command(s);
1505 ide_cmd_lba48_transform(s, lba48);
1507 s->req_nb_sectors = s->mult_sectors;
1508 n = MIN(s->nsector, s->req_nb_sectors);
1510 s->status = SEEK_STAT | READY_STAT;
1511 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1513 s->media_changed = 1;
1518 static bool cmd_read_pio(IDEState *s, uint8_t cmd)
1520 bool lba48 = (cmd == WIN_READ_EXT);
1522 if (s->drive_kind == IDE_CD) {
1523 ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
1524 ide_abort_command(s);
1529 ide_abort_command(s);
1533 ide_cmd_lba48_transform(s, lba48);
1534 s->req_nb_sectors = 1;
1540 static bool cmd_write_pio(IDEState *s, uint8_t cmd)
1542 bool lba48 = (cmd == WIN_WRITE_EXT);
1545 ide_abort_command(s);
1549 ide_cmd_lba48_transform(s, lba48);
1551 s->req_nb_sectors = 1;
1552 s->status = SEEK_STAT | READY_STAT;
1553 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1555 s->media_changed = 1;
1560 static bool cmd_read_dma(IDEState *s, uint8_t cmd)
1562 bool lba48 = (cmd == WIN_READDMA_EXT);
1565 ide_abort_command(s);
1569 ide_cmd_lba48_transform(s, lba48);
1570 ide_sector_start_dma(s, IDE_DMA_READ);
1575 static bool cmd_write_dma(IDEState *s, uint8_t cmd)
1577 bool lba48 = (cmd == WIN_WRITEDMA_EXT);
1580 ide_abort_command(s);
1584 ide_cmd_lba48_transform(s, lba48);
1585 ide_sector_start_dma(s, IDE_DMA_WRITE);
1587 s->media_changed = 1;
1592 static bool cmd_flush_cache(IDEState *s, uint8_t cmd)
1598 static bool cmd_seek(IDEState *s, uint8_t cmd)
1600 /* XXX: Check that seek is within bounds */
1604 static bool cmd_read_native_max(IDEState *s, uint8_t cmd)
1606 bool lba48 = (cmd == WIN_READ_NATIVE_MAX_EXT);
1608 /* Refuse if no sectors are addressable (e.g. medium not inserted) */
1609 if (s->nb_sectors == 0) {
1610 ide_abort_command(s);
1614 ide_cmd_lba48_transform(s, lba48);
1615 ide_set_sector(s, s->nb_sectors - 1);
1620 static bool cmd_check_power_mode(IDEState *s, uint8_t cmd)
1622 s->nsector = 0xff; /* device active or idle */
1626 /* INITIALIZE DEVICE PARAMETERS */
1627 static bool cmd_specify(IDEState *s, uint8_t cmd)
1629 if (s->blk && s->drive_kind != IDE_CD) {
1630 s->heads = (s->select & (ATA_DEV_HS)) + 1;
1631 s->sectors = s->nsector;
1632 ide_set_irq(s->bus);
1634 ide_abort_command(s);
1640 static bool cmd_set_features(IDEState *s, uint8_t cmd)
1642 uint16_t *identify_data;
1645 ide_abort_command(s);
1649 /* XXX: valid for CDROM ? */
1650 switch (s->feature) {
1651 case 0x01: /* 8-bit I/O enable (CompactFlash) */
1652 case 0x81: /* 8-bit I/O disable (CompactFlash) */
1653 if (s->drive_kind != IDE_CFATA) {
1656 s->io8 = !(s->feature & 0x80);
1658 case 0x02: /* write cache enable */
1659 blk_set_enable_write_cache(s->blk, true);
1660 identify_data = (uint16_t *)s->identify_data;
1661 put_le16(identify_data + 85, (1 << 14) | (1 << 5) | 1);
1663 case 0x82: /* write cache disable */
1664 blk_set_enable_write_cache(s->blk, false);
1665 identify_data = (uint16_t *)s->identify_data;
1666 put_le16(identify_data + 85, (1 << 14) | 1);
1669 case 0xcc: /* reverting to power-on defaults enable */
1670 s->reset_reverts = true;
1672 case 0x66: /* reverting to power-on defaults disable */
1673 s->reset_reverts = false;
1675 case 0xaa: /* read look-ahead enable */
1676 case 0x55: /* read look-ahead disable */
1677 case 0x05: /* set advanced power management mode */
1678 case 0x85: /* disable advanced power management mode */
1679 case 0x69: /* NOP */
1680 case 0x67: /* NOP */
1681 case 0x96: /* NOP */
1682 case 0x9a: /* NOP */
1683 case 0x42: /* enable Automatic Acoustic Mode */
1684 case 0xc2: /* disable Automatic Acoustic Mode */
1686 case 0x03: /* set transfer mode */
1688 uint8_t val = s->nsector & 0x07;
1689 identify_data = (uint16_t *)s->identify_data;
1691 switch (s->nsector >> 3) {
1692 case 0x00: /* pio default */
1693 case 0x01: /* pio mode */
1694 put_le16(identify_data + 62, 0x07);
1695 put_le16(identify_data + 63, 0x07);
1696 put_le16(identify_data + 88, 0x3f);
1698 case 0x02: /* sigle word dma mode*/
1699 put_le16(identify_data + 62, 0x07 | (1 << (val + 8)));
1700 put_le16(identify_data + 63, 0x07);
1701 put_le16(identify_data + 88, 0x3f);
1703 case 0x04: /* mdma mode */
1704 put_le16(identify_data + 62, 0x07);
1705 put_le16(identify_data + 63, 0x07 | (1 << (val + 8)));
1706 put_le16(identify_data + 88, 0x3f);
1708 case 0x08: /* udma mode */
1709 put_le16(identify_data + 62, 0x07);
1710 put_le16(identify_data + 63, 0x07);
1711 put_le16(identify_data + 88, 0x3f | (1 << (val + 8)));
1721 ide_abort_command(s);
1726 /*** ATAPI commands ***/
1728 static bool cmd_identify_packet(IDEState *s, uint8_t cmd)
1730 ide_atapi_identify(s);
1731 s->status = READY_STAT | SEEK_STAT;
1732 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1733 ide_set_irq(s->bus);
1737 /* EXECUTE DEVICE DIAGNOSTIC */
1738 static bool cmd_exec_dev_diagnostic(IDEState *s, uint8_t cmd)
1741 * Clear the device register per the ATA (v6) specification,
1742 * because ide_set_signature does not clear LBA or drive bits.
1744 s->select = (ATA_DEV_ALWAYS_ON);
1745 ide_set_signature(s);
1747 if (s->drive_kind == IDE_CD) {
1748 s->status = 0; /* ATAPI spec (v6) section 9.10 defines packet
1749 * devices to return a clear status register
1750 * with READY_STAT *not* set. */
1753 s->status = READY_STAT | SEEK_STAT;
1754 /* The bits of the error register are not as usual for this command!
1755 * They are part of the regular output (this is why ERR_STAT isn't set)
1756 * Device 0 passed, Device 1 passed or not present. */
1758 ide_set_irq(s->bus);
1764 static bool cmd_packet(IDEState *s, uint8_t cmd)
1766 /* overlapping commands not supported */
1767 if (s->feature & 0x02) {
1768 ide_abort_command(s);
1772 s->status = READY_STAT | SEEK_STAT;
1773 s->atapi_dma = s->feature & 1;
1775 s->dma_cmd = IDE_DMA_ATAPI;
1778 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1784 /*** CF-ATA commands ***/
1786 static bool cmd_cfa_req_ext_error_code(IDEState *s, uint8_t cmd)
1788 s->error = 0x09; /* miscellaneous error */
1789 s->status = READY_STAT | SEEK_STAT;
1790 ide_set_irq(s->bus);
1795 static bool cmd_cfa_erase_sectors(IDEState *s, uint8_t cmd)
1797 /* WIN_SECURITY_FREEZE_LOCK has the same ID as CFA_WEAR_LEVEL and is
1798 * required for Windows 8 to work with AHCI */
1800 if (cmd == CFA_WEAR_LEVEL) {
1804 if (cmd == CFA_ERASE_SECTORS) {
1805 s->media_changed = 1;
1811 static bool cmd_cfa_translate_sector(IDEState *s, uint8_t cmd)
1813 s->status = READY_STAT | SEEK_STAT;
1815 memset(s->io_buffer, 0, 0x200);
1816 s->io_buffer[0x00] = s->hcyl; /* Cyl MSB */
1817 s->io_buffer[0x01] = s->lcyl; /* Cyl LSB */
1818 s->io_buffer[0x02] = s->select; /* Head */
1819 s->io_buffer[0x03] = s->sector; /* Sector */
1820 s->io_buffer[0x04] = ide_get_sector(s) >> 16; /* LBA MSB */
1821 s->io_buffer[0x05] = ide_get_sector(s) >> 8; /* LBA */
1822 s->io_buffer[0x06] = ide_get_sector(s) >> 0; /* LBA LSB */
1823 s->io_buffer[0x13] = 0x00; /* Erase flag */
1824 s->io_buffer[0x18] = 0x00; /* Hot count */
1825 s->io_buffer[0x19] = 0x00; /* Hot count */
1826 s->io_buffer[0x1a] = 0x01; /* Hot count */
1828 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1829 ide_set_irq(s->bus);
1834 static bool cmd_cfa_access_metadata_storage(IDEState *s, uint8_t cmd)
1836 switch (s->feature) {
1837 case 0x02: /* Inquiry Metadata Storage */
1838 ide_cfata_metadata_inquiry(s);
1840 case 0x03: /* Read Metadata Storage */
1841 ide_cfata_metadata_read(s);
1843 case 0x04: /* Write Metadata Storage */
1844 ide_cfata_metadata_write(s);
1847 ide_abort_command(s);
1851 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1852 s->status = 0x00; /* NOTE: READY is _not_ set */
1853 ide_set_irq(s->bus);
1858 static bool cmd_ibm_sense_condition(IDEState *s, uint8_t cmd)
1860 switch (s->feature) {
1861 case 0x01: /* sense temperature in device */
1862 s->nsector = 0x50; /* +20 C */
1865 ide_abort_command(s);
1873 /*** SMART commands ***/
1875 static bool cmd_smart(IDEState *s, uint8_t cmd)
1879 if (s->hcyl != 0xc2 || s->lcyl != 0x4f) {
1883 if (!s->smart_enabled && s->feature != SMART_ENABLE) {
1887 switch (s->feature) {
1889 s->smart_enabled = 0;
1893 s->smart_enabled = 1;
1896 case SMART_ATTR_AUTOSAVE:
1897 switch (s->sector) {
1899 s->smart_autosave = 0;
1902 s->smart_autosave = 1;
1910 if (!s->smart_errors) {
1919 case SMART_READ_THRESH:
1920 memset(s->io_buffer, 0, 0x200);
1921 s->io_buffer[0] = 0x01; /* smart struct version */
1923 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1924 s->io_buffer[2 + 0 + (n * 12)] = smart_attributes[n][0];
1925 s->io_buffer[2 + 1 + (n * 12)] = smart_attributes[n][11];
1929 for (n = 0; n < 511; n++) {
1930 s->io_buffer[511] += s->io_buffer[n];
1932 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1934 s->status = READY_STAT | SEEK_STAT;
1935 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1936 ide_set_irq(s->bus);
1939 case SMART_READ_DATA:
1940 memset(s->io_buffer, 0, 0x200);
1941 s->io_buffer[0] = 0x01; /* smart struct version */
1943 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1945 for (i = 0; i < 11; i++) {
1946 s->io_buffer[2 + i + (n * 12)] = smart_attributes[n][i];
1950 s->io_buffer[362] = 0x02 | (s->smart_autosave ? 0x80 : 0x00);
1951 if (s->smart_selftest_count == 0) {
1952 s->io_buffer[363] = 0;
1955 s->smart_selftest_data[3 +
1956 (s->smart_selftest_count - 1) *
1959 s->io_buffer[364] = 0x20;
1960 s->io_buffer[365] = 0x01;
1961 /* offline data collection capacity: execute + self-test*/
1962 s->io_buffer[367] = (1 << 4 | 1 << 3 | 1);
1963 s->io_buffer[368] = 0x03; /* smart capability (1) */
1964 s->io_buffer[369] = 0x00; /* smart capability (2) */
1965 s->io_buffer[370] = 0x01; /* error logging supported */
1966 s->io_buffer[372] = 0x02; /* minutes for poll short test */
1967 s->io_buffer[373] = 0x36; /* minutes for poll ext test */
1968 s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
1970 for (n = 0; n < 511; n++) {
1971 s->io_buffer[511] += s->io_buffer[n];
1973 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1975 s->status = READY_STAT | SEEK_STAT;
1976 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1977 ide_set_irq(s->bus);
1980 case SMART_READ_LOG:
1981 switch (s->sector) {
1982 case 0x01: /* summary smart error log */
1983 memset(s->io_buffer, 0, 0x200);
1984 s->io_buffer[0] = 0x01;
1985 s->io_buffer[1] = 0x00; /* no error entries */
1986 s->io_buffer[452] = s->smart_errors & 0xff;
1987 s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
1989 for (n = 0; n < 511; n++) {
1990 s->io_buffer[511] += s->io_buffer[n];
1992 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1994 case 0x06: /* smart self test log */
1995 memset(s->io_buffer, 0, 0x200);
1996 s->io_buffer[0] = 0x01;
1997 if (s->smart_selftest_count == 0) {
1998 s->io_buffer[508] = 0;
2000 s->io_buffer[508] = s->smart_selftest_count;
2001 for (n = 2; n < 506; n++) {
2002 s->io_buffer[n] = s->smart_selftest_data[n];
2006 for (n = 0; n < 511; n++) {
2007 s->io_buffer[511] += s->io_buffer[n];
2009 s->io_buffer[511] = 0x100 - s->io_buffer[511];
2014 s->status = READY_STAT | SEEK_STAT;
2015 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
2016 ide_set_irq(s->bus);
2019 case SMART_EXECUTE_OFFLINE:
2020 switch (s->sector) {
2021 case 0: /* off-line routine */
2022 case 1: /* short self test */
2023 case 2: /* extended self test */
2024 s->smart_selftest_count++;
2025 if (s->smart_selftest_count > 21) {
2026 s->smart_selftest_count = 1;
2028 n = 2 + (s->smart_selftest_count - 1) * 24;
2029 s->smart_selftest_data[n] = s->sector;
2030 s->smart_selftest_data[n + 1] = 0x00; /* OK and finished */
2031 s->smart_selftest_data[n + 2] = 0x34; /* hour count lsb */
2032 s->smart_selftest_data[n + 3] = 0x12; /* hour count msb */
2041 ide_abort_command(s);
2045 #define HD_OK (1u << IDE_HD)
2046 #define CD_OK (1u << IDE_CD)
2047 #define CFA_OK (1u << IDE_CFATA)
2048 #define HD_CFA_OK (HD_OK | CFA_OK)
2049 #define ALL_OK (HD_OK | CD_OK | CFA_OK)
2051 /* Set the Disk Seek Completed status bit during completion */
2052 #define SET_DSC (1u << 8)
2054 /* See ACS-2 T13/2015-D Table B.2 Command codes */
2055 static const struct {
2056 /* Returns true if the completion code should be run */
2057 bool (*handler)(IDEState *s, uint8_t cmd);
2059 } ide_cmd_table[0x100] = {
2060 /* NOP not implemented, mandatory for CD */
2061 [CFA_REQ_EXT_ERROR_CODE] = { cmd_cfa_req_ext_error_code, CFA_OK },
2062 [WIN_DSM] = { cmd_data_set_management, HD_CFA_OK },
2063 [WIN_DEVICE_RESET] = { cmd_device_reset, CD_OK },
2064 [WIN_RECAL] = { cmd_nop, HD_CFA_OK | SET_DSC},
2065 [WIN_READ] = { cmd_read_pio, ALL_OK },
2066 [WIN_READ_ONCE] = { cmd_read_pio, HD_CFA_OK },
2067 [WIN_READ_EXT] = { cmd_read_pio, HD_CFA_OK },
2068 [WIN_READDMA_EXT] = { cmd_read_dma, HD_CFA_OK },
2069 [WIN_READ_NATIVE_MAX_EXT] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2070 [WIN_MULTREAD_EXT] = { cmd_read_multiple, HD_CFA_OK },
2071 [WIN_WRITE] = { cmd_write_pio, HD_CFA_OK },
2072 [WIN_WRITE_ONCE] = { cmd_write_pio, HD_CFA_OK },
2073 [WIN_WRITE_EXT] = { cmd_write_pio, HD_CFA_OK },
2074 [WIN_WRITEDMA_EXT] = { cmd_write_dma, HD_CFA_OK },
2075 [CFA_WRITE_SECT_WO_ERASE] = { cmd_write_pio, CFA_OK },
2076 [WIN_MULTWRITE_EXT] = { cmd_write_multiple, HD_CFA_OK },
2077 [WIN_WRITE_VERIFY] = { cmd_write_pio, HD_CFA_OK },
2078 [WIN_VERIFY] = { cmd_verify, HD_CFA_OK | SET_DSC },
2079 [WIN_VERIFY_ONCE] = { cmd_verify, HD_CFA_OK | SET_DSC },
2080 [WIN_VERIFY_EXT] = { cmd_verify, HD_CFA_OK | SET_DSC },
2081 [WIN_SEEK] = { cmd_seek, HD_CFA_OK | SET_DSC },
2082 [CFA_TRANSLATE_SECTOR] = { cmd_cfa_translate_sector, CFA_OK },
2083 [WIN_DIAGNOSE] = { cmd_exec_dev_diagnostic, ALL_OK },
2084 [WIN_SPECIFY] = { cmd_specify, HD_CFA_OK | SET_DSC },
2085 [WIN_STANDBYNOW2] = { cmd_nop, HD_CFA_OK },
2086 [WIN_IDLEIMMEDIATE2] = { cmd_nop, HD_CFA_OK },
2087 [WIN_STANDBY2] = { cmd_nop, HD_CFA_OK },
2088 [WIN_SETIDLE2] = { cmd_nop, HD_CFA_OK },
2089 [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2090 [WIN_SLEEPNOW2] = { cmd_nop, HD_CFA_OK },
2091 [WIN_PACKETCMD] = { cmd_packet, CD_OK },
2092 [WIN_PIDENTIFY] = { cmd_identify_packet, CD_OK },
2093 [WIN_SMART] = { cmd_smart, HD_CFA_OK | SET_DSC },
2094 [CFA_ACCESS_METADATA_STORAGE] = { cmd_cfa_access_metadata_storage, CFA_OK },
2095 [CFA_ERASE_SECTORS] = { cmd_cfa_erase_sectors, CFA_OK | SET_DSC },
2096 [WIN_MULTREAD] = { cmd_read_multiple, HD_CFA_OK },
2097 [WIN_MULTWRITE] = { cmd_write_multiple, HD_CFA_OK },
2098 [WIN_SETMULT] = { cmd_set_multiple_mode, HD_CFA_OK | SET_DSC },
2099 [WIN_READDMA] = { cmd_read_dma, HD_CFA_OK },
2100 [WIN_READDMA_ONCE] = { cmd_read_dma, HD_CFA_OK },
2101 [WIN_WRITEDMA] = { cmd_write_dma, HD_CFA_OK },
2102 [WIN_WRITEDMA_ONCE] = { cmd_write_dma, HD_CFA_OK },
2103 [CFA_WRITE_MULTI_WO_ERASE] = { cmd_write_multiple, CFA_OK },
2104 [WIN_STANDBYNOW1] = { cmd_nop, HD_CFA_OK },
2105 [WIN_IDLEIMMEDIATE] = { cmd_nop, HD_CFA_OK },
2106 [WIN_STANDBY] = { cmd_nop, HD_CFA_OK },
2107 [WIN_SETIDLE1] = { cmd_nop, HD_CFA_OK },
2108 [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2109 [WIN_SLEEPNOW1] = { cmd_nop, HD_CFA_OK },
2110 [WIN_FLUSH_CACHE] = { cmd_flush_cache, ALL_OK },
2111 [WIN_FLUSH_CACHE_EXT] = { cmd_flush_cache, HD_CFA_OK },
2112 [WIN_IDENTIFY] = { cmd_identify, ALL_OK },
2113 [WIN_SETFEATURES] = { cmd_set_features, ALL_OK | SET_DSC },
2114 [IBM_SENSE_CONDITION] = { cmd_ibm_sense_condition, CFA_OK | SET_DSC },
2115 [CFA_WEAR_LEVEL] = { cmd_cfa_erase_sectors, HD_CFA_OK | SET_DSC },
2116 [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2119 static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
2121 return cmd < ARRAY_SIZE(ide_cmd_table)
2122 && (ide_cmd_table[cmd].flags & (1u << s->drive_kind));
2125 void ide_exec_cmd(IDEBus *bus, uint32_t val)
2130 s = idebus_active_if(bus);
2131 trace_ide_exec_cmd(bus, s, val);
2133 /* ignore commands to non existent slave */
2134 if (s != bus->ifs && !s->blk) {
2138 /* Only RESET is allowed while BSY and/or DRQ are set,
2139 * and only to ATAPI devices. */
2140 if (s->status & (BUSY_STAT|DRQ_STAT)) {
2141 if (val != WIN_DEVICE_RESET || s->drive_kind != IDE_CD) {
2146 if (!ide_cmd_permitted(s, val)) {
2147 ide_abort_command(s);
2148 ide_set_irq(s->bus);
2152 s->status = READY_STAT | BUSY_STAT;
2154 s->io_buffer_offset = 0;
2156 complete = ide_cmd_table[val].handler(s, val);
2158 s->status &= ~BUSY_STAT;
2159 assert(!!s->error == !!(s->status & ERR_STAT));
2161 if ((ide_cmd_table[val].flags & SET_DSC) && !s->error) {
2162 s->status |= SEEK_STAT;
2166 ide_set_irq(s->bus);
2170 /* IOport [R]ead [R]egisters */
2171 enum ATA_IOPORT_RR {
2172 ATA_IOPORT_RR_DATA = 0,
2173 ATA_IOPORT_RR_ERROR = 1,
2174 ATA_IOPORT_RR_SECTOR_COUNT = 2,
2175 ATA_IOPORT_RR_SECTOR_NUMBER = 3,
2176 ATA_IOPORT_RR_CYLINDER_LOW = 4,
2177 ATA_IOPORT_RR_CYLINDER_HIGH = 5,
2178 ATA_IOPORT_RR_DEVICE_HEAD = 6,
2179 ATA_IOPORT_RR_STATUS = 7,
2180 ATA_IOPORT_RR_NUM_REGISTERS,
2183 const char *ATA_IOPORT_RR_lookup[ATA_IOPORT_RR_NUM_REGISTERS] = {
2184 [ATA_IOPORT_RR_DATA] = "Data",
2185 [ATA_IOPORT_RR_ERROR] = "Error",
2186 [ATA_IOPORT_RR_SECTOR_COUNT] = "Sector Count",
2187 [ATA_IOPORT_RR_SECTOR_NUMBER] = "Sector Number",
2188 [ATA_IOPORT_RR_CYLINDER_LOW] = "Cylinder Low",
2189 [ATA_IOPORT_RR_CYLINDER_HIGH] = "Cylinder High",
2190 [ATA_IOPORT_RR_DEVICE_HEAD] = "Device/Head",
2191 [ATA_IOPORT_RR_STATUS] = "Status"
2194 uint32_t ide_ioport_read(void *opaque, uint32_t addr)
2196 IDEBus *bus = opaque;
2197 IDEState *s = idebus_active_if(bus);
2202 hob = bus->cmd & (IDE_CTRL_HOB);
2204 case ATA_IOPORT_RR_DATA:
2206 * The pre-GRUB Solaris x86 bootloader relies upon inb
2207 * consuming a word from the drive's sector buffer.
2209 ret = ide_data_readw(bus, addr) & 0xff;
2211 case ATA_IOPORT_RR_ERROR:
2212 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2213 (s != bus->ifs && !s->blk)) {
2218 ret = s->hob_feature;
2221 case ATA_IOPORT_RR_SECTOR_COUNT:
2222 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2225 ret = s->nsector & 0xff;
2227 ret = s->hob_nsector;
2230 case ATA_IOPORT_RR_SECTOR_NUMBER:
2231 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2236 ret = s->hob_sector;
2239 case ATA_IOPORT_RR_CYLINDER_LOW:
2240 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2248 case ATA_IOPORT_RR_CYLINDER_HIGH:
2249 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2257 case ATA_IOPORT_RR_DEVICE_HEAD:
2258 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2265 case ATA_IOPORT_RR_STATUS:
2266 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2267 (s != bus->ifs && !s->blk)) {
2272 qemu_irq_lower(bus->irq);
2276 trace_ide_ioport_read(addr, ATA_IOPORT_RR_lookup[reg_num], ret, bus, s);
2280 uint32_t ide_status_read(void *opaque, uint32_t addr)
2282 IDEBus *bus = opaque;
2283 IDEState *s = idebus_active_if(bus);
2286 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2287 (s != bus->ifs && !s->blk)) {
2293 trace_ide_status_read(addr, ret, bus, s);
2297 static void ide_perform_srst(IDEState *s)
2299 s->status |= BUSY_STAT;
2301 /* Halt PIO (Via register state); PIO BH remains scheduled. */
2302 ide_transfer_halt(s);
2304 /* Cancel DMA -- may drain block device and invoke callbacks */
2305 ide_cancel_dma_sync(s);
2307 /* Cancel PIO callback, reset registers/signature, etc */
2310 /* perform diagnostic */
2311 cmd_exec_dev_diagnostic(s, WIN_DIAGNOSE);
2314 static void ide_bus_perform_srst(void *opaque)
2316 IDEBus *bus = opaque;
2320 for (i = 0; i < 2; i++) {
2322 ide_perform_srst(s);
2325 bus->cmd &= ~IDE_CTRL_RESET;
2328 void ide_ctrl_write(void *opaque, uint32_t addr, uint32_t val)
2330 IDEBus *bus = opaque;
2334 trace_ide_ctrl_write(addr, val, bus);
2336 /* Device0 and Device1 each have their own control register,
2337 * but QEMU models it as just one register in the controller. */
2338 if (!(bus->cmd & IDE_CTRL_RESET) && (val & IDE_CTRL_RESET)) {
2339 for (i = 0; i < 2; i++) {
2341 s->status |= BUSY_STAT;
2343 replay_bh_schedule_oneshot_event(qemu_get_aio_context(),
2344 ide_bus_perform_srst, bus);
2351 * Returns true if the running PIO transfer is a PIO out (i.e. data is
2352 * transferred from the device to the guest), false if it's a PIO in
2354 static bool ide_is_pio_out(IDEState *s)
2356 if (s->end_transfer_func == ide_sector_write ||
2357 s->end_transfer_func == ide_atapi_cmd) {
2359 } else if (s->end_transfer_func == ide_sector_read ||
2360 s->end_transfer_func == ide_transfer_stop ||
2361 s->end_transfer_func == ide_atapi_cmd_reply_end ||
2362 s->end_transfer_func == ide_dummy_transfer_stop) {
2369 void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
2371 IDEBus *bus = opaque;
2372 IDEState *s = idebus_active_if(bus);
2375 trace_ide_data_writew(addr, val, bus, s);
2377 /* PIO data access allowed only when DRQ bit is set. The result of a write
2378 * during PIO out is indeterminate, just ignore it. */
2379 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2385 if (p + 1 > s->data_end) {
2391 if (p + 2 > s->data_end) {
2395 *(uint16_t *)p = le16_to_cpu(val);
2399 if (p >= s->data_end) {
2400 s->status &= ~DRQ_STAT;
2401 s->end_transfer_func(s);
2405 uint32_t ide_data_readw(void *opaque, uint32_t addr)
2407 IDEBus *bus = opaque;
2408 IDEState *s = idebus_active_if(bus);
2412 /* PIO data access allowed only when DRQ bit is set. The result of a read
2413 * during PIO in is indeterminate, return 0 and don't move forward. */
2414 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2420 if (p + 1 > s->data_end) {
2426 if (p + 2 > s->data_end) {
2430 ret = cpu_to_le16(*(uint16_t *)p);
2434 if (p >= s->data_end) {
2435 s->status &= ~DRQ_STAT;
2436 s->end_transfer_func(s);
2439 trace_ide_data_readw(addr, ret, bus, s);
2443 void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
2445 IDEBus *bus = opaque;
2446 IDEState *s = idebus_active_if(bus);
2449 trace_ide_data_writel(addr, val, bus, s);
2451 /* PIO data access allowed only when DRQ bit is set. The result of a write
2452 * during PIO out is indeterminate, just ignore it. */
2453 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2458 if (p + 4 > s->data_end) {
2462 *(uint32_t *)p = le32_to_cpu(val);
2465 if (p >= s->data_end) {
2466 s->status &= ~DRQ_STAT;
2467 s->end_transfer_func(s);
2471 uint32_t ide_data_readl(void *opaque, uint32_t addr)
2473 IDEBus *bus = opaque;
2474 IDEState *s = idebus_active_if(bus);
2478 /* PIO data access allowed only when DRQ bit is set. The result of a read
2479 * during PIO in is indeterminate, return 0 and don't move forward. */
2480 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2486 if (p + 4 > s->data_end) {
2490 ret = cpu_to_le32(*(uint32_t *)p);
2493 if (p >= s->data_end) {
2494 s->status &= ~DRQ_STAT;
2495 s->end_transfer_func(s);
2499 trace_ide_data_readl(addr, ret, bus, s);
2503 static void ide_dummy_transfer_stop(IDEState *s)
2505 s->data_ptr = s->io_buffer;
2506 s->data_end = s->io_buffer;
2507 s->io_buffer[0] = 0xff;
2508 s->io_buffer[1] = 0xff;
2509 s->io_buffer[2] = 0xff;
2510 s->io_buffer[3] = 0xff;
2513 void ide_bus_reset(IDEBus *bus)
2517 ide_reset(&bus->ifs[0]);
2518 ide_reset(&bus->ifs[1]);
2521 /* pending async DMA */
2522 if (bus->dma->aiocb) {
2523 trace_ide_bus_reset_aio();
2524 blk_aio_cancel(bus->dma->aiocb);
2525 bus->dma->aiocb = NULL;
2528 /* reset dma provider too */
2529 if (bus->dma->ops->reset) {
2530 bus->dma->ops->reset(bus->dma);
2534 static bool ide_cd_is_tray_open(void *opaque)
2536 return ((IDEState *)opaque)->tray_open;
2539 static bool ide_cd_is_medium_locked(void *opaque)
2541 return ((IDEState *)opaque)->tray_locked;
2544 static void ide_resize_cb(void *opaque)
2546 IDEState *s = opaque;
2547 uint64_t nb_sectors;
2549 if (!s->identify_set) {
2553 blk_get_geometry(s->blk, &nb_sectors);
2554 s->nb_sectors = nb_sectors;
2556 /* Update the identify data buffer. */
2557 if (s->drive_kind == IDE_CFATA) {
2558 ide_cfata_identify_size(s);
2560 /* IDE_CD uses a different set of callbacks entirely. */
2561 assert(s->drive_kind != IDE_CD);
2562 ide_identify_size(s);
2566 static const BlockDevOps ide_cd_block_ops = {
2567 .change_media_cb = ide_cd_change_cb,
2568 .eject_request_cb = ide_cd_eject_request_cb,
2569 .is_tray_open = ide_cd_is_tray_open,
2570 .is_medium_locked = ide_cd_is_medium_locked,
2573 static const BlockDevOps ide_hd_block_ops = {
2574 .resize_cb = ide_resize_cb,
2577 int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
2578 const char *version, const char *serial, const char *model,
2580 uint32_t cylinders, uint32_t heads, uint32_t secs,
2581 int chs_trans, Error **errp)
2583 uint64_t nb_sectors;
2586 s->drive_kind = kind;
2588 blk_get_geometry(blk, &nb_sectors);
2589 s->cylinders = cylinders;
2590 s->heads = s->drive_heads = heads;
2591 s->sectors = s->drive_sectors = secs;
2592 s->chs_trans = chs_trans;
2593 s->nb_sectors = nb_sectors;
2595 /* The SMART values should be preserved across power cycles
2597 s->smart_enabled = 1;
2598 s->smart_autosave = 1;
2599 s->smart_errors = 0;
2600 s->smart_selftest_count = 0;
2601 if (kind == IDE_CD) {
2602 blk_set_dev_ops(blk, &ide_cd_block_ops, s);
2604 if (!blk_is_inserted(s->blk)) {
2605 error_setg(errp, "Device needs media, but drive is empty");
2608 if (!blk_is_writable(blk)) {
2609 error_setg(errp, "Can't use a read-only drive");
2612 blk_set_dev_ops(blk, &ide_hd_block_ops, s);
2615 pstrcpy(s->drive_serial_str, sizeof(s->drive_serial_str), serial);
2617 snprintf(s->drive_serial_str, sizeof(s->drive_serial_str),
2618 "QM%05d", s->drive_serial);
2621 pstrcpy(s->drive_model_str, sizeof(s->drive_model_str), model);
2625 strcpy(s->drive_model_str, "QEMU DVD-ROM");
2628 strcpy(s->drive_model_str, "QEMU MICRODRIVE");
2631 strcpy(s->drive_model_str, "QEMU HARDDISK");
2637 pstrcpy(s->version, sizeof(s->version), version);
2639 pstrcpy(s->version, sizeof(s->version), qemu_hw_version());
2643 blk_iostatus_enable(blk);
2647 static void ide_init1(IDEBus *bus, int unit)
2649 static int drive_serial = 1;
2650 IDEState *s = &bus->ifs[unit];
2654 s->drive_serial = drive_serial++;
2655 /* we need at least 2k alignment for accessing CDROMs using O_DIRECT */
2656 s->io_buffer_total_len = IDE_DMA_BUF_SECTORS*512 + 4;
2657 s->io_buffer = qemu_memalign(2048, s->io_buffer_total_len);
2658 memset(s->io_buffer, 0, s->io_buffer_total_len);
2660 s->smart_selftest_data = blk_blockalign(s->blk, 512);
2661 memset(s->smart_selftest_data, 0, 512);
2663 s->sector_write_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
2664 ide_sector_write_timer_cb, s);
2667 static int ide_nop_int(const IDEDMA *dma, bool is_write)
2672 static void ide_nop(const IDEDMA *dma)
2676 static int32_t ide_nop_int32(const IDEDMA *dma, int32_t l)
2681 static const IDEDMAOps ide_dma_nop_ops = {
2682 .prepare_buf = ide_nop_int32,
2683 .restart_dma = ide_nop,
2684 .rw_buf = ide_nop_int,
2687 static void ide_restart_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
2689 s->unit = s->bus->retry_unit;
2690 ide_set_sector(s, s->bus->retry_sector_num);
2691 s->nsector = s->bus->retry_nsector;
2692 s->bus->dma->ops->restart_dma(s->bus->dma);
2693 s->io_buffer_size = 0;
2694 s->dma_cmd = dma_cmd;
2695 ide_start_dma(s, ide_dma_cb);
2698 static void ide_restart_bh(void *opaque)
2700 IDEBus *bus = opaque;
2705 qemu_bh_delete(bus->bh);
2708 error_status = bus->error_status;
2709 if (bus->error_status == 0) {
2713 s = idebus_active_if(bus);
2714 is_read = (bus->error_status & IDE_RETRY_READ) != 0;
2716 /* The error status must be cleared before resubmitting the request: The
2717 * request may fail again, and this case can only be distinguished if the
2718 * called function can set a new error status. */
2719 bus->error_status = 0;
2721 /* The HBA has generically asked to be kicked on retry */
2722 if (error_status & IDE_RETRY_HBA) {
2723 if (s->bus->dma->ops->restart) {
2724 s->bus->dma->ops->restart(s->bus->dma);
2726 } else if (IS_IDE_RETRY_DMA(error_status)) {
2727 if (error_status & IDE_RETRY_TRIM) {
2728 ide_restart_dma(s, IDE_DMA_TRIM);
2730 ide_restart_dma(s, is_read ? IDE_DMA_READ : IDE_DMA_WRITE);
2732 } else if (IS_IDE_RETRY_PIO(error_status)) {
2736 ide_sector_write(s);
2738 } else if (error_status & IDE_RETRY_FLUSH) {
2740 } else if (IS_IDE_RETRY_ATAPI(error_status)) {
2741 assert(s->end_transfer_func == ide_atapi_cmd);
2742 ide_atapi_dma_restart(s);
2748 static void ide_restart_cb(void *opaque, bool running, RunState state)
2750 IDEBus *bus = opaque;
2756 bus->bh = qemu_bh_new(ide_restart_bh, bus);
2757 qemu_bh_schedule(bus->bh);
2761 void ide_register_restart_cb(IDEBus *bus)
2763 if (bus->dma->ops->restart_dma) {
2764 bus->vmstate = qemu_add_vm_change_state_handler(ide_restart_cb, bus);
2768 static IDEDMA ide_dma_nop = {
2769 .ops = &ide_dma_nop_ops,
2773 void ide_init2(IDEBus *bus, qemu_irq irq)
2777 for(i = 0; i < 2; i++) {
2779 ide_reset(&bus->ifs[i]);
2782 bus->dma = &ide_dma_nop;
2785 void ide_exit(IDEState *s)
2787 timer_free(s->sector_write_timer);
2788 qemu_vfree(s->smart_selftest_data);
2789 qemu_vfree(s->io_buffer);
2792 static bool is_identify_set(void *opaque, int version_id)
2794 IDEState *s = opaque;
2796 return s->identify_set != 0;
2799 static EndTransferFunc* transfer_end_table[] = {
2803 ide_atapi_cmd_reply_end,
2805 ide_dummy_transfer_stop,
2808 static int transfer_end_table_idx(EndTransferFunc *fn)
2812 for (i = 0; i < ARRAY_SIZE(transfer_end_table); i++)
2813 if (transfer_end_table[i] == fn)
2819 static int ide_drive_post_load(void *opaque, int version_id)
2821 IDEState *s = opaque;
2823 if (s->blk && s->identify_set) {
2824 blk_set_enable_write_cache(s->blk, !!(s->identify_data[85] & (1 << 5)));
2829 static int ide_drive_pio_post_load(void *opaque, int version_id)
2831 IDEState *s = opaque;
2833 if (s->end_transfer_fn_idx >= ARRAY_SIZE(transfer_end_table)) {
2836 s->end_transfer_func = transfer_end_table[s->end_transfer_fn_idx];
2837 s->data_ptr = s->io_buffer + s->cur_io_buffer_offset;
2838 s->data_end = s->data_ptr + s->cur_io_buffer_len;
2839 s->atapi_dma = s->feature & 1; /* as per cmd_packet */
2844 static int ide_drive_pio_pre_save(void *opaque)
2846 IDEState *s = opaque;
2849 s->cur_io_buffer_offset = s->data_ptr - s->io_buffer;
2850 s->cur_io_buffer_len = s->data_end - s->data_ptr;
2852 idx = transfer_end_table_idx(s->end_transfer_func);
2854 fprintf(stderr, "%s: invalid end_transfer_func for DRQ_STAT\n",
2856 s->end_transfer_fn_idx = 2;
2858 s->end_transfer_fn_idx = idx;
2864 static bool ide_drive_pio_state_needed(void *opaque)
2866 IDEState *s = opaque;
2868 return ((s->status & DRQ_STAT) != 0)
2869 || (s->bus->error_status & IDE_RETRY_PIO);
2872 static bool ide_tray_state_needed(void *opaque)
2874 IDEState *s = opaque;
2876 return s->tray_open || s->tray_locked;
2879 static bool ide_atapi_gesn_needed(void *opaque)
2881 IDEState *s = opaque;
2883 return s->events.new_media || s->events.eject_request;
2886 static bool ide_error_needed(void *opaque)
2888 IDEBus *bus = opaque;
2890 return (bus->error_status != 0);
2893 /* Fields for GET_EVENT_STATUS_NOTIFICATION ATAPI command */
2894 static const VMStateDescription vmstate_ide_atapi_gesn_state = {
2895 .name ="ide_drive/atapi/gesn_state",
2897 .minimum_version_id = 1,
2898 .needed = ide_atapi_gesn_needed,
2899 .fields = (VMStateField[]) {
2900 VMSTATE_BOOL(events.new_media, IDEState),
2901 VMSTATE_BOOL(events.eject_request, IDEState),
2902 VMSTATE_END_OF_LIST()
2906 static const VMStateDescription vmstate_ide_tray_state = {
2907 .name = "ide_drive/tray_state",
2909 .minimum_version_id = 1,
2910 .needed = ide_tray_state_needed,
2911 .fields = (VMStateField[]) {
2912 VMSTATE_BOOL(tray_open, IDEState),
2913 VMSTATE_BOOL(tray_locked, IDEState),
2914 VMSTATE_END_OF_LIST()
2918 static const VMStateDescription vmstate_ide_drive_pio_state = {
2919 .name = "ide_drive/pio_state",
2921 .minimum_version_id = 1,
2922 .pre_save = ide_drive_pio_pre_save,
2923 .post_load = ide_drive_pio_post_load,
2924 .needed = ide_drive_pio_state_needed,
2925 .fields = (VMStateField[]) {
2926 VMSTATE_INT32(req_nb_sectors, IDEState),
2927 VMSTATE_VARRAY_INT32(io_buffer, IDEState, io_buffer_total_len, 1,
2928 vmstate_info_uint8, uint8_t),
2929 VMSTATE_INT32(cur_io_buffer_offset, IDEState),
2930 VMSTATE_INT32(cur_io_buffer_len, IDEState),
2931 VMSTATE_UINT8(end_transfer_fn_idx, IDEState),
2932 VMSTATE_INT32(elementary_transfer_size, IDEState),
2933 VMSTATE_INT32(packet_transfer_size, IDEState),
2934 VMSTATE_END_OF_LIST()
2938 const VMStateDescription vmstate_ide_drive = {
2939 .name = "ide_drive",
2941 .minimum_version_id = 0,
2942 .post_load = ide_drive_post_load,
2943 .fields = (VMStateField[]) {
2944 VMSTATE_INT32(mult_sectors, IDEState),
2945 VMSTATE_INT32(identify_set, IDEState),
2946 VMSTATE_BUFFER_TEST(identify_data, IDEState, is_identify_set),
2947 VMSTATE_UINT8(feature, IDEState),
2948 VMSTATE_UINT8(error, IDEState),
2949 VMSTATE_UINT32(nsector, IDEState),
2950 VMSTATE_UINT8(sector, IDEState),
2951 VMSTATE_UINT8(lcyl, IDEState),
2952 VMSTATE_UINT8(hcyl, IDEState),
2953 VMSTATE_UINT8(hob_feature, IDEState),
2954 VMSTATE_UINT8(hob_sector, IDEState),
2955 VMSTATE_UINT8(hob_nsector, IDEState),
2956 VMSTATE_UINT8(hob_lcyl, IDEState),
2957 VMSTATE_UINT8(hob_hcyl, IDEState),
2958 VMSTATE_UINT8(select, IDEState),
2959 VMSTATE_UINT8(status, IDEState),
2960 VMSTATE_UINT8(lba48, IDEState),
2961 VMSTATE_UINT8(sense_key, IDEState),
2962 VMSTATE_UINT8(asc, IDEState),
2963 VMSTATE_UINT8_V(cdrom_changed, IDEState, 3),
2964 VMSTATE_END_OF_LIST()
2966 .subsections = (const VMStateDescription*[]) {
2967 &vmstate_ide_drive_pio_state,
2968 &vmstate_ide_tray_state,
2969 &vmstate_ide_atapi_gesn_state,
2974 static const VMStateDescription vmstate_ide_error_status = {
2975 .name ="ide_bus/error",
2977 .minimum_version_id = 1,
2978 .needed = ide_error_needed,
2979 .fields = (VMStateField[]) {
2980 VMSTATE_INT32(error_status, IDEBus),
2981 VMSTATE_INT64_V(retry_sector_num, IDEBus, 2),
2982 VMSTATE_UINT32_V(retry_nsector, IDEBus, 2),
2983 VMSTATE_UINT8_V(retry_unit, IDEBus, 2),
2984 VMSTATE_END_OF_LIST()
2988 const VMStateDescription vmstate_ide_bus = {
2991 .minimum_version_id = 1,
2992 .fields = (VMStateField[]) {
2993 VMSTATE_UINT8(cmd, IDEBus),
2994 VMSTATE_UINT8(unit, IDEBus),
2995 VMSTATE_END_OF_LIST()
2997 .subsections = (const VMStateDescription*[]) {
2998 &vmstate_ide_error_status,
3003 void ide_drive_get(DriveInfo **hd, int n)
3007 for (i = 0; i < n; i++) {
3008 hd[i] = drive_get_by_index(IF_IDE, i);